/*         INFINITY CODE         */
/*   https://infinity-code.com   */

using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

namespace InfinityCode.OnlineMapsExamples
{
    /// <summary>
    /// Example of how to make a request to Open Street Map Overpass API and handle the response.
    /// </summary>
    [AddComponentMenu("Infinity Code/Online Maps/Examples (API Usage)/OSMRequestExample")]
    public class OSMRequestExample : MonoBehaviour
    {
        /// <summary>
        /// Reference to the map. If not specified, the current instance will be used.
        /// </summary>
        public OnlineMaps map;
        
        private void Start()
        {
            // If the map is not specified, get the current instance.
            if (map == null) map = OnlineMaps.instance;
            
            // Get map corners
            Vector2 topLeft = map.topLeftPosition;
            Vector2 bottomRight = map.bottomRightPosition;

            // Create OSM Overpass request where highway is primary or residential
            string requestData = String.Format("node({0},{1},{2},{3});way(bn)[{4}];(._;>;);out;",
                bottomRight.y.ToString(OnlineMapsUtils.numberFormat), 
                topLeft.x.ToString(OnlineMapsUtils.numberFormat), 
                topLeft.y.ToString(OnlineMapsUtils.numberFormat), 
                bottomRight.x.ToString(OnlineMapsUtils.numberFormat), 
                "'highway'~'primary|residential'");

            // Send request and subscribe to complete event
            OnlineMapsOSMAPIQuery.Find(requestData).OnComplete += OnComplete;
        }

        /// This event called when the request is completed.
        private void OnComplete(string response)
        {
            List<OnlineMapsOSMNode> nodes;
            List<OnlineMapsOSMWay> ways;
            List<OnlineMapsOSMRelation> relations;

            // Get nodes, ways and relations from response
            OnlineMapsOSMAPIQuery.ParseOSMResponse(response, out nodes, out ways, out relations);

            foreach (OnlineMapsOSMWay way in ways)
            {
                // Log highway type
                Debug.Log(way.tags.FirstOrDefault(t => t.key == "highway").value);
            }
        }
    }
}